Filter



(No Model.)

2 Sheets-Sheet 1. H. LARDNER & Cl. BRENT.

FILTER'.

No. 595,182'. Patented'ne. 7, 1897,.

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Wifxyzsszs Mwwsnm 2. Sheets-Sheet 2.

H. L'ARDNER an @.BRENT.

' FILTER.

No. 595,182. Patented Dc. 7., 1897.

{ lo Model.)

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UNITED STATnsy PATENT OFFICE.

'HENRY ILARDNFR. AND CHAR-LES BRENT, OF NILES, MICHIGAN.

FILTER.

SPECIFICATION forming part of Letters PatentNo. 595,182, dated December 7, 1897.

Appi'icaion een May 7,1897.

To @ZZ whom it may concern.-

' residing at Niles, in the county of Berrien and State of Michigan, have invented a new and useful Filter, of lwhich the following is a specification.

This invention relates to iilters, its object being to provide'a device of this character which sha-libe exceedingly simple in construction and efcient in operation and through which the flow of water may be quickly reversed for the purpose of cleansing the filter-bed.

The invention also contemplates the use of compressed air, which will be stored during the filtering operation, to aid the water in cleansing thel filter-bed. -Y

lVith theseand other objects in view th e invention' consists in the several details ci' constructionand combination of parts, as will be hereinafter 'fully described, and particularly pointed out in the claims.

In the drawings, Figure 1 is a vertical section of a filter made in accordance with our invention. Fig. 2 is a horizontal section on he linen: of Fig. 1..- Fig. 3 is a horizontal section on the line y 'y of Fig. 1. Fig. 4 is an end view of the pump, showing a part of the suction-pipe and the valved openin g therein for the admission of air. l

Similar reference-numerals in dicate similar parts in the several figures.

1 indicates a casin g, preferably cylindrical in form, and the ends 2 of which are convex.

3 indicates s'upportingflegs which are provided with fianges 4 at their upper ends, and these flanges are firmly 'secured to the lower end of the casing by means of bolts 5. Each end of the casing is provided with a central opening 6.

7 indicates an elbowpipe,which is provided with a flange 8 to .fit over the opening 6 inthe upper end ot. the casing.

9 indicates a perforated pipe, which is closed at its lower end and provided at its upper end with a iiange 10. This pipe is fitted within the casing, and the anges 8 and 10 are firmly securedtogether and to the casing by means of bolts l1.

Serial No. 635,531/ (No model 12 indicatesa T-coupling, the vertical arm of which is provided with a iiange 13, and this T-coupling is adapted to fit over the opening 6 in the lower end of the casing.

1l' indicates a nipple which is provided with a flange 15 at its lower'end, and this nipple is arranged "on the inside of the casing, and the flanges 13 and 15 are firmly secured togetherand to the casing by means of the bolts 1G. The upper end of the nipple 1i is provided with a cap 17, which may be integral with the nipple or be secured to itin any suitable manner, and from this cap a series of perforated pipes 1S radiate;r These pipes extend at their outer ends into close proximity with the vertical wall of the casing, and

around them.

material which occupies about two-thirds ot' the interior of the casing, and the perforated pipes 1S are embedded in the sand and firmly supported thereby.

the supply-pipe 21 communicates. The water to be filtered is fed througli'ihis pipe 21,which may, if necessary, be connected toa pump 22.

23 indicates a threeway valve, and 24- a pipe which connects the valves 20 and 23.

25'indicates a pipe leading from one side of the valve 23to'the elbow-pipe 7, and 26 is a pipe leading from the opposite side of the valve 28. This pipe 20 servesas a dischargepipe when the current of water is reversed, in order to cleanse the lter-bed.

27 indicates a pipe leading from the valve 20 on the side opposite to that from which the pipe 24 leads, and this pipe 27 is connect-ed to one side of the T-eoupling 12. From the other side of thev T-coupling 12 a pipe 28 leads, and through this pipethe filtered water is conveyed from the lcasing into the storagetank or the water-main, asr desired. The pipe 28 is provided with avalve 29, by means 'of which the iiow from the filter through the pipe 2S may be cut off when necessary. Each of the valves 20 and 23 is provided with a lever or handle 30, and these levers are connected by meansot' a rod 31 in order that the vz-:lves may be simultaneously operate-'l the perforations in theI pipes extend entirely 19 indicates sand or other suitable filtering l I' 7 2O indicates a two-wayivalve with which IOO 32 indicates an air-pipe leading from the elbow 7, and 33 is a three-way valve fitted in the pipe 32. From the Valve 33 a branch pipe 34: leads to a tank 35, into which air is forced during the process of filteringA and caused to accumulate therein under pressure. This air may be drawn in through a valved opening 41 in the suction-pipe 42 in close proximity to the pump-chamber, (see Fig. 4,) or it may b e supplied by an independent pump.. 3G -indicates a head which is hollow and from which a series of perforated pipes 37 radiate. A pipe 38 leads from the upper end of the compressed-air tank 3Qsinto the lower end of the head 36, and this pipe is provided with a valve 39, by means of which the flow of air from the tank to the head can be controlled.

The upper end of the casing is provided with alnanhole, which is closed by a cap or cover 40, which may be secured in position in any well-known and approved manner.

In operation the plugs in the valves and 23 will b e set so that the water will flow from the ppe 21 up through the pipe'24, through the valve 23, pipe 25, and into` the casing through the perforated pipe 9, and it will then pass down through the filtering material and be discharged vthrough the perforated pipes 1 8 into the pipe 28, by which it will be conveyed to any desired place. WVhen it is 'desired to cleanse the filter-bed, the valve 29 will be closed and the plugs of thevalves 2O ,and 23 be turned so that the water will flow from the pipe l21 through the pipe 27 and up through the nipple 14, through the pipes 18,'

andbeforced up thrgugh the ltering material. At the same time the valve. 39 will. be opened to'permit-the compressed air to fiow fromthe tank out through the perforated pipe 37, which, as shown, are embedded in the sand v or other filtering material a short distance below its upper surface, and the force of the water and the'compressed air will thoroughly gita'te the materialof which the filter-bed is 'formed and wash out all the mud and other 'ff/,impurities which may have accumulated therein, and the mud and other impurities will be carried ofi. bythe Water which will be forced through the perforated pipe 9, thence 'through the pipe 25, valve 23, and dischargepipe 26. The filtering material will not, however, escape with the mud and other impurities for the reason that it is too heavy to be lifted any great distance upwardly and for the further reason that it will not be able to pass through the perforations inv the pipe 9.

' reversal of thel current through the filter-bed lcan be quickly 'accomplished by the mere shifting of the plugs inthe'valves 2O and 23,

which plugs are so connected as lto be operated simultaneously. It will also be seen that the air, which has been stored in thc tank 35 during'the filtering operation, will greatly aid the water in cleansing the filter-bed.

It will be understood that changes in the form, proportion, and minor details of construction. may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having thus described the invention, what we claim is l. In a filter, the combination with the casing, the filtering material contained therein, a water-supply pipe, a perforated pipe connected to the supply-pipe and extending into the casing at its upper end above the filtering material, a branch pipe having a valve connection to the supply-pipe, a series of radiating perforated pipes seated in the filtering material near'the bottom of the casing, a discharge-pipe for the filtered vwater with which the series of radiating perforated pipes communicate, a pipe leading from the discharge-pipe and having a valve connection with the supply-pipe, and means 'to operate the val'ves to reverse the normal fiow of water and cause it to enter the filter through the discharge-pipe, and pass therefrom with impurities from the. filtering material through the perforated pipe, the supply-pipe and the branch pipe connected to the supply-pipe, substantially as described.

2. In a filter, the combination with the casing, and the filtering material contained therein, of a storage-tank for compressed air, a series of radiating perforated pipes seated' in the filtering material near its upper surface, a hollovT head from which said pipes radiate, and a valved pipe connection between the airtank and the hollow head, whereby the compressed air may be discharged into the filtering material to agitate it, substantially as described.

3. In afilteringapparatus', the combination with the casing, the ltering material con-v.

tained therein, and the supply-pipe through which the water is conveyed to the filter, of a pump connected to the supply-pipe, a valved ICO IIO`

opening in the suction-pipe in close proximity to the pump-chamber for the admission of air, a compressed-air reservoir, a valved pipe leading from the water-supply pipe to the said reservoir, a series of radiating perforated I pipes seated in the filtering material near its upper surface, a hollow head from which said .tween the supply-pipe and said inlet and outlet pipes, a discharge-pipe connected Ato the inlet-pipe at the upper end of the casing and material are' discharged` when the latter is cleansed, controlling-valves interposed in the v pipe connection between the supply-pipe and said inlet, outlet and discharge pipes, levers On4 the valve-plugs, and a. rod connecting said levers, substantially as described.

In'testimony that we .claim the foregoing as through which the impurities vin the filtering our own we have hereto axed on;` signatures .in the presence of two 4Witnesses.'-

' HENRY LARDNER.

I Witnesses:

CHAS. A. JOHNSON, GEO. J. HOWARD.

CHARLES BRENT. i 

